Looks like one of the dicentras to me, maybe formosa, tho the taxonomists have been at it again and I believe they have a new botanical name "lamprocapnos".
Vendée - 20kms from Atlantic coast.
"The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
Posts
Can you take an in focus photo of the flowers?
https://www.google.com/search?q="Dicentra+formosa+bacchanal"&client=firefox-b-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjske-P_Z7wAhVA_rsIHckDAy0Q_AUoAXoECAEQAw&biw=1280&bih=579